//
//  GCDGroup.h
//  MyFunctionDemo
//
//  Created by Ting Han on 2017/8/28.
//  Copyright © 2017年 Ting Han. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface GCDGroup : NSObject
@property (nonatomic, readonly, strong) dispatch_group_t dispatchGroup;

- (void)wait;
- (void)enter;
- (void)leave;
- (BOOL)wait: (NSTimeInterval)delay;

@end
